Diquat dibromide as a chemical aid to pasture establishment in the lower south-east of South Australia

The use of diquat dibromide permitted the successful sod seeding of perennial grasses. Rates of 2 1/2 and 5 oz an acre of diquat dibromide ion controlled weed competition. Time of seeding affected the response to spraying. Spraying without sod seeding controlled capeweed (Cryptostemma calendula Druce) in the first year, but in the following year there was a re-entry of the weed. This re-entry was reduced and almost eliminated by sod seeding with a perennial grass.